Display device and method of controlling same

ABSTRACT

Disclosed are a display device and a method of controlling a display device, the display device including: an image processor configured to process an image; a display configured to display the image processed by the image processor; and a controller configured to determine a moving direction of at least one object having mobility in the image, and controls the image processor so that at least a partial region of the image can be stretched and displayed based on the determined moving direction.

TECHNICAL FIELD

The present invention relates to a display device and a method ofcontrolling the same, in which an object having mobility in an image isdisplayed with increased stereoscopic effect and the enlivening effect.

BACKGROUND ART

When an object moves in an image displayed on a screen of a displaydevice, a moving direction of the object is taken into account to makean aspect ratio or the like be symmetrical with regard to the up, down,left and right sides of the screen. Like this, when the aspect ratio ofthe screen is made symmetrical, stereoscopic effect and the enliveningeffect of the moving object is lessen. Accordingly, there is a need of amethod of increasing the stereoscopic effect and the enlivening effectof the object moving in the image displayed on the screen.

DISCLOSURE Technical Problem

Accordingly, an object of the present invention is to provide a displaydevice and a method of controlling the same, which can increase mobilityof an object moving in an image.

Technical Solution

According to an aspect of an exemplary embodiment, there is provided adisplay device including: an image processor configured to process animage; a display configured to display the image processed by the imageprocessor; and a controller configured to determine a moving directionof at least one object having mobility in the image, and controls theimage processor so that at least a partial region of the image can bestretched and displayed based on the determined moving direction.

The controller may determine a focused one of the objects havingmobility in the image, and stretch the region based on the movingdirection of the determined one.

The controller may determine at least one among a stretching degree,shape and range of the region to be stretched based on at least oneamong the kind of image, the kind of object, the size of the object anda speed of the object.

The controller may change the region to be stretched corresponding tochange in the moving direction of the object.

The controller may control the image processor to gradually increase atleast one of a stretching degree and a range for a plurality of regionsof the image based on the moving direction of the object.

The controller may stretch at least a partial region of the image by apreset ratio with regard to at least one of the objects.

When there are a plurality of objects having mobility in the image, thecontroller may control the region to be stretched and displayedcorresponding to each moving direction of the plurality of objects.

The controller may control the plurality of regions to be stretchedbased on at least one of a stretching degree, shape and range.

According to an aspect of another exemplary embodiment, there isprovided a method of controlling a display device, the method including:displaying a processed image; determining a moving direction of at leastone object having mobility in the image; and stretching and displayingat least a partial region of the image based on the determined movingdirection.

The method may further include determining a focused one of the objectshaving mobility in the image; and stretching the region based on themoving direction of the determined one.

The method may further include determining at least one of a stretchingdegree, shape and range of the region to be stretched based on at leastone among the kind of image, the kind of object, the size of the objectand a speed of the object.

The stretching and displaying may include changing the region to bestretched corresponding to change in the moving direction of the object.

The stretching and displaying may include gradually increasing at leastone of a stretching degree and a range for a plurality of regions of theimage based on the moving direction of the object.

The stretching and displaying may include stretching at least a partialregion of the image by a preset ratio with regard to at least one of theobjects.

The stretching and displaying may include stretching and displaying eachregion corresponding to each moving direction of a plurality of objectsand regions when the plurality of objects having mobility are present inthe image.

Advantageous Effects

According to the present invention, there are provided a display deviceand a method of controlling the same, which can increase mobility of anobject moving in an image.

DESCRIPTION OF DRAWINGS

FIG. 1 is a block diagram of a display device according to oneembodiment of the present invention,

FIG. 2 illustrates an example where a plurality of objects havingmobility is displayed on a screen in a display device according to oneembodiment of the present invention,

FIG. 3 illustrates an example where an arrow having mobility movestoward a target on a screen in a display device according to oneembodiment of the present invention,

FIGS. 4 to 7 illustrates examples where a partial region of a screen isstretched to increase mobility of an arrow moving toward a target on thescreen in a display device according to one embodiment of the presentinvention,

FIG. 8 illustrates an example of one method of stretching a region on ascreen in a display device according to one embodiment of the presentinvention,

FIG. 9 illustrates an example where a stretch region is changed as amoving direction of a moving arrow is changed on a screen in a displaydevice according to one embodiment of the present invention,

FIG. 10 illustrates an example of a scaling ratio with regard to apanning direction of an image on a screen in a display device accordingto one embodiment of the present invention,

FIG. 11 illustrates an example where a screen region is stretched in adirection of a baseball moving in an image having a ratio of 16:9displayed in a display device having an aspect ratio of 21:9 accordingto one embodiment of the present invention,

FIG. 12 illustrates an example where a screen region is stretched in adirection of a baseball moving in an image having a ratio of 4:3displayed in a display device having an aspect ratio larger than theratio of 4:3 according to one embodiment of the present invention,

FIGS. 13 and 14 illustrate examples of adjusting a stretching degreewith regard to left and right regions on a screen in a display deviceaccording to one embodiment of the present invention,

FIGS. 15 and 16 illustrate examples of stretching an object and a regionof an opposite direction to the forwarding direction of the objectmoving on a screen in a display device according to one embodiment ofthe present invention,

FIG. 17 illustrates an example of stretching an object when the objectmoves in a depth direction on a screen in a display device according toone embodiment of the present invention,

FIGS. 18 and 19 illustrate examples of stretch regions with regard to aplurality of objects having mobility on a screen in a display deviceaccording to one embodiment of the present invention,

FIG. 20 illustrates an example of stretching only a partial region ofone object focused among a plurality of objects moving in differentdirections from one another on a screen in a display device according toone embodiment of the present invention,

FIG. 21 is a control flowchart of showing operations of a display deviceaccording to one embodiment of the present invention, and

FIGS. 22 and 23 are control flowcharts of showing operations of adisplay device according to one embodiment of the present invention.

BEST MODE

Below, embodiments of the present invention will be described in detailwith reference to accompanying drawings.

FIG. 1 is a block diagram of a display device 10 according to oneembodiment of the present invention. The display device 10 in thisembodiment includes an image processor 110 for processing an image, anda display 120 for displaying the image processed by the image processor110. There are no limits to the kinds of image processing processesperformed in the image processor 110, and the image processing processesmay for example include de-multiplexing to divide a predetermined signalinto signals according to characteristics, decoding performedcorresponding to an image format of an image signal, de-interlacing toconvert an interlaced-type image signal into a progressive-type imagesignal, noise reduction, detail enhancement, frame refresh rateconversion and the like to improve image quality. To this end, the imageprocessor 110 may include a decoder (not shown) to decode a source imagein accordance with image formats of an encoded source image, and a framebuffer (not shown) to store the decoded source in units of frame. Theimage processor 110 may be materialized by an image processing board(not shown) that includes a system-on-chip where many functions areintegrated, or a printed circuit board where individual elements forindependently processing each of such processes are mounted, andinternally provided in the display device 10. The image processor 110performs various preset image processing processes with regard to abroadcast signal including an image signal received in a receiver (notshown), and a source image including an image signal received from animage source (not shown). The image processor 110 outputs an imagesignal subjected to such a process to the display device 10, so that thedisplay device 10 can display the processed broadcast signal and theprocessed source image. The display 120 may display an image based on animage signal output from the image processor 110. There are no limits tothe types of the display 120, and the display 120 may be materialized byvarious display types such as liquid crystal, plasma, light-emittingdiode (LED), organic light-emitting diode (OLED), surface-conductionelectron-emitter, carbon nano-tube, nano-crystal, etc. The display 120displays an image based on an image signal processed by the imageprocessor 110. There are no limits to a display method of the display120, and the display 120 may use a display method of a liquid crystaldisplay (LCD), a plasma display panel (PDP), an organic light emittingdiode (OLED), or the like. In this case, the display 120 may include anLCD panel, a PDP panel, an OLED panel, or the like. The display 120 maydisplay an image and a color calibration image. The display 120 mayinclude a display panel for displaying an image, and a panel driver forprocessing an image signal to be displayed on the display panel, andthere are no limits to its detailed materialization. An image signalreceives from an external input source through an interface may besubjected to the image processing processes such as decoding,de-interlacing, scaling and the like and then displayed on the display120. A controller 100 may control general elements in the display device10. The controller 100 determines a moving direction of at least oneobject having mobility in an image, and controls the image processor 110to display an image, at least a partial region of which is stretchedbased on the determined moving direction.

FIG. 2 illustrates an example where a plurality of objects havingmobility is displayed on a screen in a display device 10 according toone embodiment of the present invention. On a screen 120 of the displaydevice 10 is displayed a plurality of moving objects a, b and c. Thecontroller 100 of the display device 10 may determine whether an objectand a background are present having mobility in an image. Further, thecontroller 100 determines whether to stretch a region corresponding towhich object among the plurality of objects a, b and c determined ashaving mobility. Further, the controller 100 may determine whether anobject is focused in an image and then stretch only a regioncorresponding to the focused object. Further, the controller 100 maystretch the focused object and the region. Further, the controller 100may stretch the object and the region to thereby increase stereoscopiceffect and the enlivening effect of the moving object and region when itis determined that the object and the region move at preset speed orhigher. Referring back to FIG. 2, the focused object c moves leftward.In this case, if the object c is displayed with a stretched rightregion, the mobility of the object c stands out, thereby increasing thestereoscopic effect and the enlivening effect of the object c.

FIG. 3 illustrates an example where an arrow having mobility movestoward a target on a screen in a display device 10 according to oneembodiment of the present invention. As shown in FIG. 3, to give aneffect on moving toward a target, an arrow a is displayed with only apanning effect as if the surrounding background of the arrow a movesreversely. Besides, if a screen is subjected to asymmetric scaling aswell as the panning effect, it is possible to provide an image moreimproved in the stereoscopic effect and the enlivening effect of thearrow a.

FIGS. 4 to 7 illustrates examples where a partial region of a screen isstretched to increase mobility of an arrow moving toward a target on thescreen in a display device 10 according to one embodiment of the presentinvention. As shown in FIG. 4, when a rear region R1 of the arrow a inFIG. 3 is stretched and displayed, the arrow a is displayed withincreased mobility, thereby improving the stereoscopic effect and theenlivening effect of the arrow a. Such a stretch region R1 is formed tostretch the whole vertical width of the screen. Herein, the stretchregion R1 of the arrow a may be increased in a scaling ratio, and afrontward region around the target for which the arrow a heads may bedecreased in the scaling ratio. Further, the head of the arrow a may beincreased in the scaling ratio. Like this, when the rear region andfront region of the arrow a, and the front of the object are changed inthe scaling ratio, it is possible to increase effects of the mobility,directionality, moving speed, etc. of the arrow a.

In FIG. 5, a stretch region R2 is formed to stretch only a largervertical width rather than the vertical width of the arrow a. In otherwords, the vertical width of the stretch region R2 is varied dependingon the vertical width of the arrow a, i.e. the object having mobility.The vertical width of the stretch region R2 may be determined based onthe vertical width of the object having mobility, and may be alsodetermined based on the moving speed of the object having mobility.Further, the vertical width of the stretch region may be determined inaccordance with the kinds of image. In addition, the vertical width ofthe stretch region may be determined in accordance with the kinds ofobject having mobility. Herein, the vertical width of the region to bestretched may be determined in accordance with sex, ages and tastes of auser. Further, at least one of a stretching degree, a stretching shape,a stretching range as well as the vertical width of the region to bestretched may be determined based on at least ono of the kind of image,the kind of object having mobility, the size of the object havingmobility, and the speed of the object having mobility. In addition, atleast one of the stretching degree, the stretching kind and thestretching range of the region to be stretched may be determined basedon at least one of the sex, ages and tastes of a user.

Unlike the rectangular shape of the stretch region R2 shown in FIG. 5, astretch region R3 shown in FIG. 6 is formed to have a trapezoidal shapethat becomes gradually wider in a backward direction. The trapezoidalstretch region R3 more improves a speedy effect of the arrow a than therectangular stretch region R2. Further, when the size of the arrow a isincreasing on an image, the trapezoidal stretch region R3 furtherimproves the mobility of the arrow a. Further, at least one of thestretching degree and the range of the plurality of regions in thetrapezoidal stretch region R3 may be gradually increased based on themoving direction of the arrow a. As necessary, a user may set the shapeof the stretch region. Further, the shape of the stretch region mayinclude various shapes such as an inverted trapezoid, etc. Further, atleast one of the brightness, light and shade, chroma, and color may beadjusted with regard to the stretch region.

Unlike the stretch region R3 of FIG. 6 having a horizontal panningdirection corresponding to left and right directions of a screen, thestretch region R3 of FIG. 7 has a panning direction corresponding to atrapezoidal shape that gradually becomes wider in a backward direction.Since the stretch region of the arrow a has an effect on spreading outup and down, the mobility of the arrow a is further enhanced. Such apanning direction may be determined in accordance with the kinds ofimage or the kinds of object. Herein, when it is determined that aregion and an object having mobility disappear from an image while theimage is displayed with at least a partial stretch region, the image maybe displayed without stretching the partial region. Further, even thoughthe object is present within an image, the stretch region may be notdisplayed when a moving speed of an object having mobility is slowerthan a preset moving speed. Further, the stretch region may be set whenthe size of object having mobility is smaller than a preset size.

FIG. 8 illustrates an example of one method of stretching a region on ascreen in a display device 10 according to one embodiment of the presentinvention. Stretching the region on the screen is setting pixels of aregion to be stretched to be different from pixels of a region not to bestretched among pixels in the display 120. For example, a non-stretchregion may be displayed with 500 pixels, whereas a stretch region may bedisplayed with 1,000 pixels. As shown in FIG. 8, the method of adjustingthe degree and kind of stretching the stretch region R3 and the range ofthe region may be performed in horizontal and vertical directions withregard to pixels. The stretch region R3 is made by arranging more pixelsin the horizontal direction than those in the vertical direction. Likethis, it is possible to adjust the range, degree and kind of region tobe stretched by arranging the pixels in the horizontal and verticaldirections.

FIG. 9 illustrates an example where a stretch region is changed as amoving direction of a moving arrow is changed on a screen in a displaydevice 10 according to one embodiment of the present invention. Withinan image, an object having mobility does not always move in only onedirection. When the object moves only in one direction, there are nochanges in the direction of the stretch region. However, as shown inFIG. 9, a stretch region R4 is formed in parallel with a rear region ofthe arrow a while the arrow a moves rightward from an upper left side ofthe screen. Then, a stretch region R5 is changed in shape and directionwhen the arrow a moves changing a direction toward a lower left side ofthe screen along a dotted line. In result, when the moving direction ofthe arrow a is changed toward a lower side of the screen, a stretchregion R6 is vertically oriented. Like this, when the moving directionof the object is changed, the stretch regions R4, R5 and R6 are alsochanged in range and orientation. In particular, the size, width,length, degree, shape, and range of the stretch region for the arrow aare varied depending on a relative distance or the like between thearrow a and the target.

FIG. 10 illustrates an example of a scaling ratio with regard to apanning direction of an image on a screen in a display device 10according to one embodiment of the present invention. FIG. 10 shows thatleft and right scaling rations are different in accordance with panningdirections of an object having mobility when an image is displayed by apanorama function. When there are no objects having mobility, thedisplay device 10 processes and displays an image with a uniform ratiobetween the left and right sides of the screen. In FIG. 10, (a) showsthat the left and right sides of the screen are subjected to scaling tohave a uniformly symmetric ratio. Then, when an object having mobilityappears in an image and the mobility of the image causes the panningdirection of the screen to be oriented leftward, (b) shows that theright side is subjected to scaling to have a leftward compressioneffect, thereby providing stereoscopic effect to a user. Further, whenthe panning direction of the screen is oriented rightward, (c) showsthat the left side is subjected to scaling to have a rightwardcompression effect, thereby providing stereoscopic effect to a user.Although one side of the screen is subjected to scaling, scaling may beperformed by a certain ratio at regular intervals of the screen, and anincreasing or decreasing scaling ratio may be differently set. Whenleft-side scaling of the screen is increased, the scaling may beperformed by a certain ratio in accordance with the regions of thescreen, or the scaling ratio may be gradually changed, and the scalingmay be performed in various ways.

FIG. 11 illustrates an example where a screen region is stretched in adirection of a baseball moving in an image having a ratio of 16:9displayed in a display device having an aspect ratio of 21:9 accordingto one embodiment of the present invention. In FIG. 11, (a) shows that ablack screen of a left region R7 is caused because the aspect ratio of21:9 of the display device 10 is larger than the ratio of 16:9 of theimage. Referring to FIG. 11, (a) shows a broadcast of a baseball game.FIG. 11(b) shows that a baseball thrown by a pitcher is hit by a hitterto at least an outfield in the broadcasted baseball game, and thescaling ratio of the left region in the image is increased by referringto a flying direction of the baseball to stretch the left region R7 ofthe screen in the display device 10. Like this, it is possible to morelively display the flight of the baseball by increasing the scalingratio of the screen region in a direction where the baseball flies inconsideration of the flying direction of the baseball.

FIG. 12 illustrates an example where a screen region is stretched in adirection of a baseball moving in an image having a ratio of 4:3displayed in a display device having an aspect ratio larger than theratio of 4:3 according to one embodiment of the present invention. InFIG. 12, (a) shows the left region R7 caused because the aspect ratio ofthe display device 10 is larger than the ratio of the image like that ofFIG. 11. In addition, FIG. shows a right region R8 of the black screencaused because the aspect ratio of the display device 10 is larger thanthe ratio of the image. In FIG. 12, (a) shows that a moving object isnot present, but (b) shows that the right region is stretched as anobject having mobility appears. In FIG. 12, (b) shows that a baseballthrown by a pitcher is hit by a hitter to at least an outfield (i.e.rightward) in the broadcasted baseball game, and the scaling ratio ofthe right region in the image is increased by referring to a flyingdirection (i.e. a rightward direction) of the baseball. Thus, the imageof the baseball broadcast is stretched in the right direction of thescreen in the display device 10, and displayed on the black screen ofthe right region R8. Herein, to more enhance a flying effect of thebaseball, the baseball broadcast image may be moved toward the region R7and the right region of the screen may be more stretched in (b) of FIG.12. This may be performed by a preset criterion for changing the ratioof the image.

FIGS. 13 and 14 illustrate examples of adjusting a stretching degreewith regard to left and right regions on a screen in a display device 10according to one embodiment of the present invention. In FIG. 13, (a)shows a train runs on a rail. There are a region R9 at a left side and aregion R10 at a right side. In FIG. 13, (b) shows that the left regionR9 and the right region R10 are stretched to increase movement effect ofthe train as the object having mobility, i.e. the train appears in animage. Referring to (b) of FIG. 13, a stretching degree in the rightregion R10 is greater than that in the left region R9. Herein, theobject having mobility, i.e. the train is also subjected to scaling sothat a front portion of the train is bigger than a rear portion so thatthe mobility of the train can be more effectively represented.Therefore, a user can view the dynamic movement of the train.

Referring to FIG. 14, (a) shows a moving object shaped like a robot.There are a region R11 at a left side and a region R12 at a right side.In FIG. 14, (b) shows that the left region R11 and the right region R13are stretched to increase movement effect of the train as the objecthaving mobility, i.e. the train appears in an image. Referring to (b) ofFIG. 14, a stretching degree in the right region R12 is greater thanthat in the left region R11. By taking the orientation of the objectshaped like a robot into account, the scaling ratio is decreased in theforward direction of the robot-shaped object, and the scaling ratio isincreased in an opposite direction to a forwarding direction of therobot-shaped object.

FIG. 15 illustrates an example of stretching an object and a region ofthe opposite direction to the forwarding direction of the object movingon a screen in a display device 10 according to one embodiment of thepresent invention. FIG. 15 shows that the left region R11 of FIG. isstretched and the robot-shaped object I is more stretched than that ofFIG. 14. With this, a user can experience the stereoscopic effectincreased by asymmetry when more stretching the robot-shaped object I asshown in FIG. 15 rather than displaying the unstretched robot-shapedobject I moving in the image without change. Referring to FIG. 15, therobot-shaped object I is more stretched to have an effect on the leftregion of the image, thereby correspondingly stretching the region ofthe opposite direction to the forwarding direction of the object.

FIG. 16 illustrates an example of stretching an object and a region ofthe opposite direction to the forwarding direction of the object movingon a screen in a display device according to one embodiment of thepresent invention. FIG. 16 shows that a region is stretched more largelythan the stretch region of the opposite direction to the forwardingdirection of the moving object I and the stretched object I, and thestretching degree of the object I itself is increased. With this, whenstereoscopic effect is given by stretching the object having mobility,the stretching degree of the region in the opposite direction to theforwarding direction of the object may be determined in accordance withthe stretching size, speed and the like of the object. For example, whenit is determined that the stretching degree is so high that thestretched size of the object is higher than a preset size, thestereoscopic effect of the image may be enhanced by further increasingthe stretching degree of the region in the opposite direction to theforwarding direction of the object. When it is determined that the speedof the object having mobility is faster than a preset moving speed inthe image, the stereoscopic effect of the image may be enhanced byfurther increasing the stretching degree of the region in the oppositedirection to the forwarding direction of the object. FIG. 16 shows thatthe object I is stretched, and the region in the opposite direction tothe forwarding direction of the object is stretched in accordance withthe stretching size and speed of the object.

FIG. 17 illustrates an example of stretching an object I when the objectmoves in a depth direction on a screen in a display device 10 accordingto one embodiment of the present invention. Even when the object I movesfrom a distance toward a user on the screen of the display device 10,the object I may be stretched to add the stereoscopic effect. In theimage, the object I becomes bigger as moving from a distance in thedepth direction toward a user. However, when the object I is stretchedby increasing a degree of enlarging the object I in accordance withmovement of the object I, a user may feel as if the object I moves muchfaster toward the user. Thus, a user may feel as if the approachingobject I moves and becomes larger. Herein, as the object I moves from adistance in the depth direction toward a user, the stereoscopic effectmay be enhanced by increasing the degree of stretching the object I.When the object I is stretched and the left and right regions of theobject I are also stretched, it may be achieved by preset settings oronly the object may be stretched to enhance the stereoscopic effect.When the object I moves in the depth direction, the object I isstretched but the left and right regions are reduced without stretch,thereby emphasizing the object I. Since the object I is stretched, theobject I and the left and right regions may be adjusted with regard toat least one of brightness, light and shade, chroma, and color, therebymaking a user feel enhanced stereoscopic effect.

FIGS. 18 and 19 illustrate examples of stretch regions with regard to aplurality of objects having mobility on a screen in a display device 10according to one embodiment of the present invention. When a pluralityof objects and regions are present having mobility in an image, eachregion may be stretched corresponding to each moving direction of theplurality of objects and regions. FIG. 18 shows aircrafts as theplurality of objects a1, a2, a3, a4 and a5 having mobility. Theplurality of objects a1, a2, a3, a4 and a5 moves rightward from the leftside of the screen. The aircrafts move from left to right flying information, and the controller 100 of the display device 10 determinesthe moving direction and stretches the left region, i.e. the rear regionof the aircraft in an opposite direction to the moving direction. Theregions R16, R17, R18, R19 and R20 corresponding to the respectiveaircrafts may be stretched and displayed. Thus, the stereoscopic effectis enhanced with regard to the formation flight of the aircrafts. Aregion may be set to be larger than each vertical width of the aircraftsa1, a2, a3, a4 and a5, i.e. the objects having mobility but not intrudethe vertical width of another aircraft. As shown in FIG. 18, when theplurality of objects a1, a2, a3, a4 and a5 are moving, the stretchregion for the foremost moving object a3 may be set up to the wholevertical width of the screen. On the other hand, when the stretch regionis displayed with regard to each object, the stretch regions are set notto overlap with each other. However, when the effect is enhanced eventhough the stretch regions are overlapped with each other, the stretchregions may be previously set to overlap with each other. In addition,the stretch region of each object to be moved has to be determined withregard to the vertical width and the backward length. For instance, whenthe aircraft moves from the left side and approximately reaches theright side, it may be determined whether to stretch the region up to thebackward, i.e. left screen end of the aircraft, apply differentstretching degrees according to sections, stretch only a partial region,etc. thereby stretching the stretch region. Referring to FIG. 18, allthe rear regions of the objects having mobility, i.e. the aircrafts a1,a2, a3, a4 and a5 are stretched.

Unlike the rectangular stretch regions shown in FIG. 18, FIG. 19illustrates that the stretch region is set and displayed by combinationof the trapezoidal stretch region and the rectangular stretch region. Inthis case different from the stretch region of FIG. 18, the stretchregions are hardly likely to overlap with each other, thereby enhancingthe stereoscopic effect with regard to each aircraft. As shown in FIG.19, the mobility of each aircraft may be improved by increasingdifference between the top and bottom of the trapezoid. The plurality ofregions to be stretched may be different in at least one of thestretching degree, the shape and the range. The plurality of regions tobe stretched may be stretched by at least one of the stretching degree,the shape and the range. The plurality of regions to be stretched may bestretched by at least two of the stretching degree, the shape and therange.

FIG. 20 illustrates an example of stretching only a partial region ofone object focused among a plurality of objects moving in differentdirections from one another on a screen in a display device 10 accordingto one embodiment of the present invention. FIG. 20 shows a plurality ofobjects a1, a2, a3, a4, and I. In this image, the object I is focused,and only the rear region of the object I is stretched. The embodiment ofFIG. 20 is given by way of example, in which the stretch region may bedetermined with regard to one focused object since it may become verycomplicated when the stretch regions are set and stretched with regardto all objects when there are many unfocused moving objects. When theplurality of objects generally move in similar directions, the stretchregion may be set and stretched with regard to each of the object. Whenthe plurality of objects respectively move in different directions, thestretch region may be set and stretched with regard to a focused object.There may be many cases with regard to the plurality of objects, andthere are no limits to a certain case. Preferably, the stretch regionmay be set not to confuse a user.

FIG. 21 is a control flowchart of showing operations of a display device10 according to one embodiment of the present invention. An imageprocessed in the image processor 110 is displayed on the display 120(S11). A moving direction of at least one object having mobility in theimage displayed on the display 120 is determined (S12). At least apartial region of an image is stretched and displayed based on thedetermined moving direction (S13).

FIG. 22 is a control flowchart of showing operations of a display device10 according to one embodiment of the present invention. An imageprocessed in the image processor 110 is displayed on the display 120(S21). One to be focused among regions and objects having mobility inthe image displayed on the display 120 is determined (S22). A movingdirection of a focused object having mobility, which includes at leastone of regions and objects having mobility in the image displayed on thedisplay 120 is determined (S23). At least one of a stretching degree,shape and range of a region to be stretched is determined based on atleast of the kind of image, the kind of object having mobility, the sizeof the object having mobility, and the speed of the moving object (S24).At least one of a stretching degree, kind and range of a region to bestretched is determined based on at least one of sex, ages and tastes ofa user (S25). Based on the moving direction determined in the operationS23, the region to be stretched is stretched and displayed with thestretching degree, shape and range determined in the operations S24 andS25 (S26). The region to be stretched is changed and displayed inresponse to change in the moving direction of the object having mobility(S27). When it is determined that the region and object having mobilitydisappear from the image, at least a partial region of the image isstopped from being stretched and displayed (S28).

FIG. 23 is a control flowchart of showing operations of a display device10 according to one embodiment of the present invention. An imageprocessed in the image processor 110 is displayed on the display 120(S31). It is determined whether there are a plurality of objects andregions having mobility in the image displayed on the display 120 (S32).Each moving direction of the plurality of objects and regions havingmobility in the image displayed on the display 120 is determined (S33).At least one of a stretching degree, shape and range of a region to bestretched is determined based on at least one of the kind of image, thekind of object having mobility, the size of the object having mobility,and the speed of the object having mobility (S34). At least one of thestretching degree, kind and range of the region to be stretched isdetermined based on at least one of sex, ages and tastes of a user(S35). The region to be stretched is stretched and displayed byadjusting at least one of brightness, light and shade, chroma, and colorwith regard to the stretching degree, shape and range determined in theoperations S34 and S35 based on the moving direction determined in theoperation S33 (S36). The region to be stretched is displayed changing inresponse to change in the moving direction of the object having mobility(S37). When it is determined that the region and the object havingmobility disappear from the image, at least a partial region of theimage is stopped from being stretched and displayed (S38). By thedisplay device 10, the direction of the moving object is determined andthe region of the object having mobility is stretched to make the screenasymmetric, thereby enhancing the movement effect and stereoscopiceffect of the object having mobility in the image.

Although a few exemplary embodiments have been shown and described, itwill be appreciated by those skilled in the art that changes may be madein these exemplary embodiments without departing from the principles andspirit of the invention, the scope of which is defined in the appendedclaims and their equivalents.

1. A display device comprising: an image processor configured to processan image; a display configured to display the image processed by theimage processor; and a controller configured to determine a movingdirection of at least one object having mobility in the image, andcontrols the image processor so that at least a partial region of theimage can be stretched and displayed based on the determined movingdirection.
 2. The display device according to claim 1, wherein thecontroller determines a focused one of the objects having mobility inthe image, and stretches the region based on the moving direction of thedetermined one.
 3. The display device according to claim 1, wherein thecontroller determines at least one among a stretching degree, shape andrange of the region to be stretched based on at least one among the kindof image, the kind of object, the size of the object and a speed of theobject.
 4. The display device according to claim 1, wherein thecontroller changes the region to be stretched corresponding to change inthe moving direction of the object.
 5. The display device according toclaim 1, wherein the controller controls the image processor togradually increase at least one of a stretching degree and a range for aplurality of regions of the image based on the moving direction of theobject.
 6. The display device according to claim 1, wherein thecontroller stretches at least a partial region of the image by a presetratio with regard to at least one of the objects.
 7. The display deviceaccording to claim 1, wherein, when there are a plurality of objectshaving mobility in the image, the controller controls the region to bestretched and displayed corresponding to each moving direction of theplurality of objects.
 8. The display device according to claim 7,wherein the controller controls the plurality of regions to be stretchedbased on at least one of a stretching degree, shape and range.
 9. Amethod of controlling a display device, the method comprising:displaying a processed image; determining a moving direction of at leastone object having mobility in the image; and stretching and displayingat least a partial region of the image based on the determined movingdirection.
 10. The method according to claim 9, further comprising:determining a focused one of the objects having mobility in the image;and stretching the region based on the moving direction of thedetermined one.
 11. The method according to claim 9, further comprisingdetermining at least one of a stretching degree, shape and range of theregion to be stretched based on at least one among the kind of image,the kind of object, the size of the object and a speed of the object.12. The method according to claim 9, wherein the stretching anddisplaying comprise changing the region to be stretched corresponding tochange in the moving direction of the object.
 13. The method accordingto claim 9, wherein the stretching and displaying comprise graduallyincreasing at least one of a stretching degree and a range for aplurality of regions of the image based on the moving direction of theobject.
 14. The method according to claim 9, wherein the stretching anddisplaying comprise stretching at least a partial region of the image bya preset ratio with regard to at least one of the objects.
 15. Themethod according to claim 9, wherein the stretching and displayingcomprise stretching and displaying each region corresponding to eachmoving direction of a plurality of objects and regions when theplurality of objects having mobility are present in the image.